CN207529941U - It is a kind of can remote adjustment beam parameter compact high current diode - Google Patents

It is a kind of can remote adjustment beam parameter compact high current diode Download PDF

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Publication number
CN207529941U
CN207529941U CN201721763518.6U CN201721763518U CN207529941U CN 207529941 U CN207529941 U CN 207529941U CN 201721763518 U CN201721763518 U CN 201721763518U CN 207529941 U CN207529941 U CN 207529941U
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China
Prior art keywords
cathode
anode
inner cylinder
magnetic field
hollow cathode
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Withdrawn - After Issue
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CN201721763518.6U
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Chinese (zh)
Inventor
李春霞
王淦平
刘振帮
金晓
黄华
李文君
张新凯
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Institute of Applied Electronics of CAEP
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Institute of Applied Electronics of CAEP
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Abstract

The utility model discloses it is a kind of can remote adjustment beam parameter compact high current diode, including the cathode block for being arranged on sealing space and the hollow cathode being arranged on cathode block, the anode inner cylinder being correspondingly arranged with hollow cathode, it is arranged on the anode outer barrel of anode inner cylinder outer surface, the hollow cathode is coaxially disposed with anode inner cylinder, but hollow cathode is not be overlapped in the axial direction with anode inner cylinder, magnetic field is provided in the axial direction of the cathode block, magnetic field is provided in the axial direction of anode outer barrel, relative distance can be adjusted between cathode and anode inner cylinder, it is adjusted by distance and realizes that output impedance changes;The utility model is ingenious in design, it is simple in structure to be easily achieved, can remote adjustment anode and cathode spacing so as to adjust diode impedance, and it no longer needs to destroy entire vacuum environment as traditional diode is adjusted every time, adjusting working efficiency is greatly improved, with prominent substantive distinguishing features and marked improvement, it is suitble to large-scale promotion application.

Description

It is a kind of can remote adjustment beam parameter compact high current diode
Technical field
The present invention relates to diode field, especially it is a kind of can remote adjustment generate the two of high impedance high pressure strong current electron beam Pole pipe.
Background technology
The demand of high-power microwave source system functionization proposes power source and microwave device in further hoisting power water It is flat, while reduce the requirement of volume weight.Conventional structure High-Power Microwave scale-up version device(Such as RKA)Due to space charge effect Lead to working frequency and the output microwave power upper limit.Device working impedance is promoted, operating current reduction can weaken The influence of space charge effect promotes device working efficiency, simultaneously because to prime driving source work(under the conditions of similary operating voltage Rate requirement is relatively low, convenient for total system Miniaturization Design.In traditional high current event-free survival, electron beam is emitted using full submergence Mode, cathode emission area and anode canister are completely immersed in guiding field homogeneity area.In such structure, diode is toward high impedance tune It is limited by cathode rod and anode canister radial distance during section and is difficult to realize higher resistance.In fixed cathode size Under, if to realize higher impedance, it is necessary to increase anode canister and guiding magnetic field radial dimension, increase the volume and again of system Amount.Meanwhile cathode rod voltage increase to a certain extent after, cathode rod is inevitably generated a part of radial direction electron emission, The magnetic line of force dissipated outward along guiding magnetic field end is formed electronic reflux by a part of electronics therein, so as to influence electron beam Efficiency of transmission.
Invention content
The purpose of the invention is to overcome high impedance adjusting and system compact in existing high current event-free survival structure Between contradiction, promote electron beam transmission efficency, while in order to solve to need to remove two poles during present diode impedance is adjusted Tube anode cylinder destroys the problem of working efficiency caused by vacuum is low, provide it is a kind of it is novel can remote adjustment high impedance Minimize high-voltage diode.
To achieve the above object, the present invention adopts the following technical scheme that:
It is a kind of can remote adjustment beam parameter compact high current diode, including be arranged on sealing space cathode block and set The hollow cathode on cathode block, the anode inner cylinder being correspondingly arranged with hollow cathode are put, is arranged on the sun of anode inner cylinder outer surface Pole outer barrel, the hollow cathode is coaxially disposed with anode inner cylinder but hollow cathode is not be overlapped in the axial direction with anode inner cylinder, described Magnetic field is provided in the axial direction of cathode block, magnetic field is provided in the axial direction of anode outer barrel, between cathode and anode inner cylinder it is opposite away from From that can adjust, adjusted by distance and realize that output impedance changes.
In the above-mentioned technical solutions, the anode inner cylinder is arranged on the internal face of anode outer barrel, and same with anode outer barrel Axis, the anode inner cylinder can be moved along anode outer barrel on axis.
In the above-mentioned technical solutions, the anode inner cylinder includes fixed section and active segment, and electricity is provided in the fixed section Machine, the output terminal of motor are connected to active segment, and active segment moves under the action of motor along the axis of anode outer barrel.
In the above-mentioned technical solutions, controller is provided on the motor, the control terminal of controller is connected with controlling cable, The controlling cable passes through anode inner cylinder, anode outer barrel to be connected to outside diode, and the space in the anode outer barrel is closed Vacuum.
In the above-mentioned technical solutions, for the hollow cathode ring set on cathode block, the hollow cathode can be along cathode The axial movement of seat.
In the above-mentioned technical solutions, the cathode block include a telescopic end, the hollow cathode ring set on telescopic end, The telescopic end drives hollow cathode to move in the axial direction.
In the above-mentioned technical solutions, motor is provided in the cathode block, motor drives flexible end motion, connects motor Control line is reached outside diode.
In the above-mentioned technical solutions, the magnetic field on the cathode block be solenoid electro-magnetic field or be permanent magnet permanent magnetism , the magnetic field on the anode outer barrel be solenoid electro-magnetic field or be permanent magnet permanent magnetic field, cathode block on anode outer barrel Any form of magnetic field combination may be used.
In the above-mentioned technical solutions, when the output impedance of diode to be adjusted, while diode is not removed, pass through It is as follows that the work of controlling cable remote control motor realizes that the distance between hollow cathode and anode inner cylinder adjust employing mode:
When hollow cathode is fixed, anode inner cylinder is driven relative to annular by the way that the motor in anode inner cylinder is controlled to work Movable cathode realizes the adjusting of the distance between hollow cathode and anode inner cylinder;
When anode inner cylinder is fixed, hollow cathode is driven relative in anode by the way that the motor in cathode block is controlled to work Cylinder is mobile, realizes the adjusting of the distance between hollow cathode and anode inner cylinder;
The motor in the motor and anode inner cylinder in cathode block is controlled simultaneously, realizes hollow cathode and the same phase of anode outer barrel To movement.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows:
In the present invention, cathode rod and hollow cathode be not be overlapped in the axial direction with anode canister, and process is adjusted in diode impedance In do not limited by cathode rod and anode canister radial distance, mainly determined by on-load voltage and anode and cathode axial distance, so as to To obtain higher diode impedance and broader impedance adjustable range under identical cathode size;
In the present invention, there is no the radial direction electron emissions between cathode rod and anode canister, reduce this electron-like along guiding The probability that the magnetic field end magnetic line of force flows back toward insulator direction, improves electron beam transmission efficency;
In the present invention, cathode rod and hollow cathode be not be overlapped in the axial direction with anode canister, and anode canister radial dimension is unrestricted In keeping pressure-resistant distance with cathode rod, so as to reduce anode canister diameter, diode structure miniaturization is realized.Correspondingly, it is located at Main boot magnetic field radial dimension and power consumption outside anode canister and drift pipe can also accordingly reduce;
In the present invention, reached by the work of remote control stepper motor and change diode anode and cathode spacing so as to adjust two poles Tube voltage current parameters, realize that electron beam parameter is long-range, high-precision control, and do not need to during adjusting to destroy diode Vacuum can realize continuously adjusting for diode state, and work effect is greatlyd improve in the application scenarios such as microwave device experiment Rate;
In the present invention, can also electron emission be realized by remote adjustment main boot magnetic field and the magnetic field intensity of supplement magnet Area and the different degrees of magnetic reinforcement effect in electron-transport area, so as to fulfill the different degrees of pinch effect of electron beam, reach tune The effect of whole electron beam envelope size.Due to this pinch effect, can also emit to obtain smaller beam using large area cathode Envelope can reduce the requirement to cathode material emission density to a certain extent;
The present invention is ingenious in design, simple in structure to be easily achieved, and easy to use and making and maintenance cost are relatively low, small, Light-weight, low energy consumption, is with a wide range of applications in high impedance microwave device development, particularly has in mobile platform application Profit.Can remote adjustment anode and cathode spacing so as to adjust diode impedance, and no longer as traditional diode, to adjust needs every time broken Bad entire vacuum environment, is greatly improved adjusting working efficiency, has prominent substantive distinguishing features and marked improvement, is suitble to extensive It promotes and applies.
Description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the schematic cross-sectional view of the present invention;
Wherein:1 is insulator, and 2 be diode outer barrel, and 3 be supplement magnet, and 4 be anode outer barrel, and 5 be main boot magnetic field, 6 It is control signal transmission line, 7 be drift pipe, and 8 be axial-adjustment unit, and 9 be anode inner cylinder, and 10 be hollow cathode, and 11 be cathode Seat, 12 be cathode rod.
Specific embodiment
All features or disclosed all methods disclosed in this specification or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.
In order to solve diode high impedance adjusting in the prior art and the contradiction between system compact and transmission effect The problems such as rate is not high, while realize that impedance adjusts process and do not destroy vacuum, it is promoted and adjusts working efficiency, the invention discloses one kind Can remote adjustment beam parameter compact high current diode.Diode in the present invention includes the external diode being made of conductor Outer barrel, the insulator being made of nylon or other insulating materials, the drift pipe being made of conductor, the cathode rod being made of conductor, The adjustable cathode seat being made of conductor has the hollow cathode that certain thickness circular ring shape cathode material is formed, by conductor structure Into anode outer barrel, the adjustable anode inner cylinder being made of conductor, the axial-adjustment unit being made of stepper motor and sliding block.Absolutely The vacuum diode chamber of a closing is collectively formed in edge, diode outer barrel, anode outer barrel and drift pipe.Main boot magnetic field is coaxial Ground is mounted in the air outside anode outer barrel and drift pipe.Cathode rod, cathode block and cathode be connected as one after with it is adjustable Anode inner cylinder is co-axially mounted, and cathode rod, cathode block and cathode are not stretched into adjustable anode outer barrel, with anode outer barrel in the axial direction It is not overlapped.Such structure to be substantially not subject to the moon during adjusting beam impedance by adjusting anode and cathode spacing The limitation of pole, cathode rod and anode inner cylinder radial distance can realize higher diode resistance under smaller anode inner diameter of steel flue It is anti-, the interior diameter of main boot magnet is correspondingly reduced, so as to fulfill the miniaturization of guiding field system and diode.Supplement magnetic Body is co-axially mounted on outside cathode rod, in vacuum area.Main boot magnetic field and supplement magnet are respectively positioned at the front and rear of cathode Both sides, two kinds of magnetic field superpositions form the guiding magnetic field in cathode emission area and electron beam transmission region.In order to make cathode emission area Magnetic field intensity further increases, and adjusts guiding magnetic field configuration, and cathode rod and cathode block may be alternatively provided as soft magnetic materials.It is such Design ensure that emission of cathode and electron beam transmission region have enough magnetic field intensities, be electronics there are one additional benefit Beam experienced magnetic field intensity from cathode emission area to drift area under control, and gradually enhancing up to stable process, produces a degree of Electron beam constriction, it means that if guiding magnetic field is solenoidal field, size of current in remote control coil can be passed through The degree of electron beam constriction is controlled, it is so as to fulfill the electron beam that different envelope sizes are obtained under identical cathode size defeated Go out.On the other hand, electron beam constriction means that the cathode that large-size may be used obtains the electron beam of reduced size, in this way may be used To reduce the requirement to cathode material emissivities so that the selection range of cathode material is more wide.In anode outer barrel, anode It is coaxial configuration between cylinder, and is provided with position limiting structure, axial-adjustment unit is mounted between anode outer barrel and anode inner cylinder, stepping Motor is fixedly mounted on anode outer tube inner wall, and stepper motor drives anode inner cylinder being slid axially back and forth along drift inside pipe wall. Include telescopic end on cathode block, cathode is installed on telescopic end.Cathode block, cathode rod are coaxial configuration, and are provided with limiting Structure, axial-adjustment unit are mounted between cathode rod and cathode block, and stepper motor is fixedly mounted on anode outer tube inner wall, stepping Motor drives cathode block telescopic end being slid axially back and forth along cathode rod inner wall.Remote control signal is by control signal lead-in It is introduced into stepper motor.Stepper motor and control signal lead-in are using certain anti-electromagnetic interference and insulation measures.By remote Journey individually adjusts anode inner cylinder position and either individually adjusts cathode block and stretch end position or adjusts anode inner cylinder position simultaneously And cathode block stretches end position, it can be achieved that anode and cathode spacing is adjusted, so as to the purpose of remote adjustment diode impedance.
Given in the present embodiment it is a kind of can remote adjustment beam parameter compact high current diode, the present embodiment it is specific Size is:Diode outer barrel uses non-magnetic rustproof Steel material, inside radius 309mm;Insulator uses nylon material;Cathode rod is adopted With soft magnetic materials A3 steel, outer radius 42mm;Cathode block uses non-magnetic rustproof Steel material, maximum outer radius 40mm;Hollow cathode Inside radius 19mm outer radius 22mm, material is graphite;Anode canister outer barrel, adjustable anode inner cylinder drift pipe use magnetism-free stainless steel Material, inside radius are respectively 90mm, 46mm, 44mm;Main boot magnetic field uses solenoid, coil inside radius 100mm, outer radius 250mm, axial length 400mm, using 6mm*6mm copper wire windings, the electric current to circulate on conducting wire is 350A, and the type of cooling is water It is cold.It supplements magnetic field and uses permanent magnet, permanent-magnetic clamp outer radius 115mm, inside radius 47.5mm, axial length 55mm, the magnetic trade mark is N45, the direction of magnetization are radial direction, mximum residual magnetism 1.4T.The experimental results showed that:When anode and cathode spacing is adjusted to 3.5cm, two Pole pipe running parameter is voltage 610kV, and electric current 2.54kA, 240 ohm of counterpart impedance, annular electron beam all can transmit smoothly By drift pipe, do not find that electronics gets to the situation of anode canister and drift tube wall, percent of pass reaches 100%.
The invention is not limited in aforementioned specific embodiments.The present invention, which expands to, any in the present specification to be disclosed The step of new feature or any new combination and any new method or process disclosed or any new combination.

Claims (9)

1. it is a kind of can remote adjustment beam parameter compact high current diode, cathode rod, cathode including being arranged on sealing space Seat and the hollow cathode being arranged on cathode block, the anode inner cylinder being correspondingly arranged with hollow cathode, are arranged on anode inner cylinder appearance The anode outer barrel in face, it is characterised in that the hollow cathode is coaxially disposed with anode inner cylinder but hollow cathode exists with anode inner cylinder It is not overlapped in axial direction, main boot magnetic field is provided in the axial direction of the anode outer barrel, supplement magnetic is provided with outside the cathode rod , the remote controlled adjusting of axial position of cathode and anode inner cylinder is adjusted by the two relative distance and realizes that output impedance becomes Change.
2. it is according to claim 1 it is a kind of can remote adjustment beam parameter compact high current diode, it is characterised in that institute It states anode inner cylinder to be arranged on the internal face of anode outer barrel, and coaxial with anode outer barrel, the anode inner cylinder can be along anode Outer barrel moves on axis.
3. it is according to claim 2 it is a kind of can remote adjustment beam parameter compact high current diode, it is characterised in that institute It states anode inner cylinder and includes fixed section and active segment, motor is provided in the fixed section, the output terminal of motor is connected to active segment, Active segment moves under the action of motor along the axis of anode outer barrel.
4. it is according to claim 3 it is a kind of can remote adjustment beam parameter compact high current diode, it is characterised in that institute It states and controller is provided on motor, the control terminal of controller is connected with controlling cable, and the controlling cable connects across anode outer barrel It is connected to outside diode, the space in the anode outer barrel is airtight vacuum.
5. it is according to claim 1 it is a kind of can remote adjustment beam parameter compact high current diode, it is characterised in that institute Hollow cathode ring set is stated on cathode block, the cathode block is coaxially mounted on cathode rod, and the hollow cathode can be along the moon The axial movement of electrode seat.
6. it is according to claim 5 it is a kind of can remote adjustment beam parameter compact high current diode, it is characterised in that institute State cathode block and include a telescopic end, the hollow cathode ring set on telescopic end, the telescopic end drive hollow cathode along Axial movement.
7. it is according to claim 6 it is a kind of can remote adjustment beam parameter compact high current diode, it is characterised in that institute It states and motor is provided in cathode block, motor drives flexible end motion, and the control line for connecting motor is reached outside diode.
8. it is according to claim 1 it is a kind of can remote adjustment beam parameter compact high current diode, it is characterised in that institute It is that solenoid electro-magnetic field is either the permanent magnetic field of permanent magnet or is cryogenic magnetic field to state main boot magnetic field, and the supplement magnetic field is spiral shell Any form of magnetic field group may be used in spool electromagnetic field or the permanent magnetic field for permanent magnet, main boot magnetic field and supplement magnetic field It closes.
9. according to claim 4 or 7 it is a kind of can remote adjustment beam parameter compact high current diode, feature exists In:When the output impedance of diode to be adjusted, while diode is not removed, pass through controlling cable remote control motor work It is as follows to make to realize that the axial distance between hollow cathode and anode inner cylinder adjusts employing mode:
When hollow cathode is fixed, anode inner cylinder is driven relative to hollow cathode by the way that the motor in anode inner cylinder is controlled to work It is mobile, realize the adjusting of the distance between hollow cathode and anode inner cylinder;
When anode inner cylinder is fixed, hollow cathode is driven to be moved relative to anode inner cylinder by the way that the motor in cathode block is controlled to work It is dynamic, realize the adjusting of the distance between hollow cathode and anode inner cylinder;
The motor in the motor and anode inner cylinder in cathode block is controlled simultaneously, realizes that hollow cathode is transported relatively simultaneously with anode outer barrel It is dynamic.
CN201721763518.6U 2017-12-18 2017-12-18 It is a kind of can remote adjustment beam parameter compact high current diode Withdrawn - After Issue CN207529941U (en)

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CN201721763518.6U CN207529941U (en) 2017-12-18 2017-12-18 It is a kind of can remote adjustment beam parameter compact high current diode

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107887449A (en) * 2017-12-18 2018-04-06 中国工程物理研究院应用电子学研究所 It is a kind of can remote adjustment beam parameter compact high current diode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107887449A (en) * 2017-12-18 2018-04-06 中国工程物理研究院应用电子学研究所 It is a kind of can remote adjustment beam parameter compact high current diode
CN107887449B (en) * 2017-12-18 2024-05-14 中国工程物理研究院应用电子学研究所 Compact type high-current diode capable of remotely adjusting beam parameters

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Granted publication date: 20180622

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Effective date of abandoning: 20240514